Grilled, fried or broiled meats and cheeses contain toxins linked to diabetes, kidney disease, etc.  

 http://www.sciencedaily.com/releases/2007/04/070424155559.htm

"The methods used to produce or cook food may have as much impact on your health as the actual food," according to a study published in the April issue of the Journal of Gerontology: Medical Sciences. Furthermore, "[g]rilled, fried or broiled animal products such as meats and cheeses contain a class of toxins called 'advanced glycation end products' (AGEs), which have been linked to....  See article by clicking link above...